<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
<head>
    <meta charset="UTF-8"name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
    <link rel="stylesheet" href="/css/main.css" th:href="@{/css/main.css}" />
    <link rel="stylesheet" href="/css/my.css" th:href="@{/css/my.css}" />
    <link rel="stylesheet" href="/css/alert.css" th:href="@{/css/alert.css}"/>
    <title>404</title>
</head>
<body>
    <div id ="yu">
        <h1>404,not found</h1>
        <p><a href="/welcome" th:href="@{/welcome}"> back to home </a>></p>
    </div>
</body>
</html>